E70 X5 rear big brake

Hi Folks,



I've managed to get X5m brakes for the front of my 3.0 diesel, with 22s going on i'm considering options to do the rears too. What's available? as I understand the X5m rear's can not be retrofitted. Apart from the usual BBKs from D2 racing, and other Taiwanese brake makers is there anything else to consider?



Thanks!